MICROOOCCI 503 



MICEOCOCCUS EADIATUS 



LIQUEFIES GELATINE 



Authority. — Fliigge, Die Mihroorganismen, 1886, p. 176. 



"Where Found. — In air and in water by Adametz, loc. cit. 



Microscopic Appearance. — Small cocci 0*8 ju %o 1-0 ^i in diameter, occurring 

 singly, in short chains, or in groups. Is slightly motile! (See Eisenberg, loc. 

 ci^,, p. 23.) 



Cultures.— 



Gelatine Plates. — Forms large white, slightly liquefying colonies in two 

 days, with a yellowish green fluorescence. Under a low power they are brownish 

 yellow, granular, circular, with starfish-like extensions. In two more days' 

 time the latter develop into a delicate and regularly-arranged circlet of rays. 

 Often a second, sometimes even a third circlet is formed. 



Gelatine Tubes. — Radial extensions ramify in places from the needle's path 

 into the adjacent gelatine, whilst at the same time a pointed, funnel-shaped^ 

 slowly hquefying canal is formed. 



Potatoes. — Grows rapidly, producing a yellowish brown expansion. 



MICEOCOCCUS EOSETTACEUS 



Authority. — Zimmermann, Die Bahterien unserer Trink- und Nutzioasser^ 

 insbesondere des Wassers der Chenmitzer Wasserleihmg, Chemnitz, 1890. 



"Where Found. — In Chemnitz water. 



Microscopic Appearance. — Irregularly sized round or elliptical cocci, ar- 

 ranged like a bunch of grapes. Their diameter varies from 0"7 /j- to over I'O fi. 

 Not motile. 



Cultures. — 



Gelatine Plates. — Forms in the depth small greyish white dots, whilst the 

 surface colonies form somewhat broad, greyish yellow, shining, drop-like ex- 

 pansions, with an irregular contour. Under a low power the former are circular 

 and smooth-rimmed, and are only rarely lentil- shaped. These lentil-shaped 

 colonies have an irregular periphery, and are of a brownish colour, which is 

 darker in the centre than towards the edge. No liquefaction ensues. 



Gelatine Tubes. — Forms a circular, spreading, rosette-shaped expansion. 

 Very little growth is visible in the depth. 



Agar-agar.— ^Forms a smooth grey shining, spreading expansion, with a 

 delicately denticulated periphery. 



Potatoes. — Forms a yellowish grey expansion. 



Kemarks. — It will not grow in the absence of air. 



MICEOCOCCUS STELLATUS 



Authority. — Maschek, Jahresbericht der Oherrealschule zu Leitmeritsy 

 1887. 



"Where Found.— In water. 



Microscopic Appearance. ^It does not form chains. 



Cultures.— 



Gelatine Plates. — Forms star-shaped colonies due to numerous extensions 

 (6 to 15) which start from the centre, and the ends of which are branched. 



Gelatine Tubes. — Grows at first only on the surface, but later growths 

 appear in the depth, from which branchings extend into the surrounding gela- 

 tine. The latter becomes brownish yellow in colour. No liquefaction of the 

 gelatine takes place. 



Potatoes. — Produces in fifteen days a brownish yellow slimy expansion. 



